Part of the SENTRON family, this 150A, three-pole molded case circuit breaker provides reliable thermal-magnetic protection for commercial applications. The bolt-on design mounts securely into Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers. Note that this QJ frame unit is superseded by the QRH23B150. Featuring a 22kAIC interrupt rating at 240VAC, it includes factory-installed load side lugs and a reverse feed rated mechanism.
HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed
Product FAQs
6 answers
What panelboards are compatible with the QJH23B150 circuit breaker?
This bolt-on breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards, motor control centers, and meter centers.
What wire sizes are accepted by the factory lugs on the QJH23B150?
The standard load side lugs accept 6 AWG to 300 kcmil copper wire, or 4 AWG to 300 kcmil aluminum wire.
What is the difference between the QJ23B150 and the QJH23B150?
The primary difference is the interrupting rating. The QJ23B150 has a standard 10kAIC rating at 240V, while the QJH23B150 features a higher interrupting capacity of 22kAIC at 240V. Both share the same physical QJ frame and bolt-on mounting.
What is the modern replacement for the QJH23B150?
The QJH23B150 has been superseded by the Siemens QRH23B150. The newer QR frame breakers share the exact same form factor and mounting dimensions as the legacy QJ frame, allowing for a direct retrofit in existing panels.
Can the QJH23B150 be reverse fed?
Yes. Siemens QJ frame breakers with non-interchangeable trip units, including the QJH23B150, are suitable for reverse feed applications according to UL 489 standards.
Is the trip unit on the QJH23B150 adjustable?
No. This breaker features a fixed thermal and fixed magnetic trip unit with long-time and instantaneous (LI) trip functions. The trip unit is non-interchangeable and cannot be adjusted in the field.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/14/26
Siemens Breaker
Breaker was a new surplus as described. Fast shipping & handling
BL
Bob L.
Verified Buyer
Reviewing
Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
6/15/26
Exactly what I needed / Great service
Excellent experience purchasing the Siemens QJH23B100. The breaker was well-packaged, priced competitively, and arrived right on schedule. It's already installed and operating perfectly. Five stars for both the product and SuperBreakers.
WE
Warren E.
Reviewing
Siemens QJH23B225 - 225A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
2/17/20
Great stock along with Great
Great stock along with Great customer service.
ED
Eddie D.
Reviewing
Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
11/27/17
Fast delivery
Great service fast delivery and received exact item for a great price.